Device and method for measuring diameter of nozzle of aircraft engine tail

An aero-engine and diameter measurement technology, applied in the field of aero-engines, can solve the problems of wasting time and fuel, and achieve the effect of ensuring accuracy, saving fuel and saving labor.

Active Publication Date: 2011-10-05
SHENYANG LIMING AERO-ENGINE GROUP CORPORATION
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  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Aiming at the time-consuming and fuel-wasting problems of existing aero-engine tail nozzle diameter measurement methods, the present invention provides an aero-engine tail nozzle diameter measurement device and its measurement method which can not only save test run time but also save fuel

Method used

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  • Device and method for measuring diameter of nozzle of aircraft engine tail
  • Device and method for measuring diameter of nozzle of aircraft engine tail
  • Device and method for measuring diameter of nozzle of aircraft engine tail

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Embodiment Construction

[0062] Such as figure 1As shown, a device for measuring the diameter of an aero-engine tail nozzle includes a feedback sensor arranged on the aero-engine, one end of the feedback sensor connected to the power supply is connected to the input end of the first voltage isolation module, and the tap end of the feedback sensor is connected to the first voltage isolation module. The input ends of two voltage isolation modules are connected; the output end of the first voltage isolation module is connected with the input end of the first PXI acquisition card, and the output end of the second voltage isolation module is connected with the input end of the second PXI acquisition card; The output ends of the first PXI acquisition card and the second PXI acquisition card are respectively connected to the industrial computer through the PXI chassis. The industrial computer is respectively connected with a display and a printer for displaying and printing nozzle data. The first voltage is...

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Abstract

The present invention relates to a device and a method for measuring the diameter of a nozzle of an aircraft engine tail, and belongs to the technical field of aircraft engines. The device comprises a feedback sensor, wherein one end of the feedback sensor connected with a power supply is connected with the input end of a first voltage isolation module; a tap end of the feedback sensor is connected with the input end of a second voltage isolation module; the output ends of the voltage isolation modules are connected with the input ends of a PXI acquisition card respectively; and the output ends of the PXI acquisition card are connected with an industrial personal computer through a PXI case respectively. The measuring method comprises the following steps of: 1, judging whether to calibrate the tail nozzle, if so, calling a tail nozzle calibration subroutine, and otherwise, measuring the diameter of the tail nozzle to acquire a signal measurement value, and executing step 3; 2, returning to execute the step 1; 3, calling a measurement signal error correction subroutine; 4, calling an engineering value arithmetic subroutine; 5, calling a power supply error correction subroutine; 6, saving nozzle data in a disk, and 7, displaying the diameter of the nozzle, and returning to execute the step 1.

Description

Technical field: [0001] The invention belongs to the technical field of aero-engines, in particular to an aero-engine tail nozzle diameter measuring device and a measuring method thereof. The utility model is used for monitoring the diameter of the tail nozzle of the aero-engine during test run, and adjusting the parameters of the engine according to the data measured by the invention. Background technique: [0002] The measurement of the diameter of the tail nozzle of an aero-engine is an important task during the engine test run, because the diameter data of the tail nozzle needs to be used to adjust the engine parameters. At present, the measurement of the diameter of the engine tail nozzle is to stop the engine immediately after reaching a certain state during the engine test run, and perform manual measurement when the engine cools down to a temperature suitable for manual measurement. This kind of measurement method not only wastes a lot of test run time, but also nee...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01B7/12
Inventor 宋伟生德品丁椿明郭旭许鹏刘国庆姜风
Owner SHENYANG LIMING AERO-ENGINE GROUP CORPORATION
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